Merge "snapshotctl: Add a test-blank-ota command for development." am:...

Merge "snapshotctl: Add a test-blank-ota command for development." am: 9d863728 am: 5da90d44 am: 8336e3a7

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2266423



Change-Id: I05460494891816748591311e9cd400b7ef3ce1db
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>